Boot or shoe crimping machine



(No Model.) 4 She ets-Sheet 1.

J. H. FERGUSON.

- BOOT 0R SHOE QRIMPING MACHINE.

No. 540,968 v Patented June 11, 1895.

WE; E55 as.

4 Sheets-Sheet 2;

(No Model.)

J. H. FERGUSON.

BOOT OR SHQB GRIMPING MACHINE.

Patented June 11, 1895.

W ESSES.

4 Sheets-Sheet 3.

(No Model.)

J. H. FERGUSON. BOOT 0E SHOE GRIMPING MACHINE.

No. 540,968. Patented June 11, 1895.

[M i A THE ncRms PETER: cov morovmou WASHINGTON. n. c.

(No Model.) 4 Sheets-Sheet 4.

J. H. FERGUSON. BOOT 0R SHOE GRIMPING MACHINE.

No. 540,968. Patented June 11,1895.

I X/E IIEIK wow S T PATENT Fries.

JAMES H. FERGUSON, ALLSTON, MASSACHUSETTS.

BOQT OR SHOE CRIMPING MACHINE.

SPECIFICATION forming part of Letters Patent No. 540,968, dated June 1 1, 1895.

Application filed August 11,1894- 10 all whom it may concern:

Be it known that I, JAMES H. FERGUSON, a citizen of the United States, and a resident of Allston,in the county of Sufiolk and State of Massachusetts, have invented new and useful Improvements in Boot or Shoe Crimping Machines, of which the following, taken in connection with the accompanying drawings, is a specification.

This invention relates to improvements in crimping machines for the purpose of crimping leather for boot and shoe uppers and it is carried out as follows, reference being had to the accompanying drawings, wherein- Figure 1 represents a front elevation of the improved crimping-machine. Fig. 2 repre-- sents a top plan viewthereof partly shown in section. Fig. 3 represents a vertical section on the line 3 3, shown in Fig. 2. Fig. 4 represents a vertical section on the line 4 4, shown in Figs. 1 and 3. Fig. 5 represents a vertical section of a modified form of the improved crimping-machine. Fig. 6 represents a detail side view of the clamping device for the upper and lower left-hand jaws as seen from X in Fig.2. Fig. 7 represents a detail side view of one of the jaw-supporting plates. Fig. 8 represents a detail side View of the clamping device for the upper and lower right-hand jaws as seen from Y in Fig. 2. Fig. 9 represents a detail side view of the mechanism for adjusting the pitmen on the crank-wheels. Fig. 10 represents a longitudinal section on the line 10 10, shown in Fig. 9. Fig. 1 1 represents an enlarged cross-section on the line 11 11, shown in Fig. 2; and Fig. 12 represents a horizontal section on the line 12 12, shown v in Fig. 11.

Similar letters refer to similar parts wherever they occur on thedifferent parts of the drawings.

A represents the base of the machine to the upper end of which are secured the vertical slotted standards B, B the inner sides of which are preferably provided with dovetailed guides as shown in Fig. 2, and on said guides are vertically movable the dove-tailed jaw car- Serial No. 520.056- (No model.)

with a radially adjustable crank pin D ;(shown in detail in Fig. 10) and to said crank pins are pivoted the pitmen D", D" the upper ends of which are pivoted to hubs or projections on the jaw carriers 0 as shown in Fig. 3, and by this arrangement a reciprocating vertical motion is imparted to the jaw carriers and their crimping and finishing jaws from the rotary crank wheels D, D.

E is the driving pulley which is loosely journaled on the driving shaft 6 which latter is supported in suitable bearings.

, The pulley E is set in a constant rotation by belt power and whenever it is desired to impart a rotary motion from said pulley to its shaft e, the operator moves a tapering sleeve f (located on shaft 6) toward the pulley E and in so doing causes a clutch lever F, shown in Fig. 3, to secure the said pulleyE to the shaft 8. The clutch sleevef is moved toward the pulley E by means of a pivoted dogf the upper portion of which tits into. an annular groove f" on the clutch sleevef asshown in Fig. 3.

The dog f is operated in one direction, in starting the machine by a treadle lever F and suitable intermediate connecting mechanism as shown in Fig. *4: and released by the influence of a spring 6' surrounding the shaft 6 as shown in Fig. 3. I wish however to state that I do not confine myself to the use of the precise clutch mechanism as shown and described as other or well known devices of this kind may be used to start and stop the machine without departingv from the essence of my invention.

To the inner end of the shaft e is secured a pinion e" the teeth of which mesh in the teeth of a gear 9 secured to the shaft G which is journaled in bearings in the lower portion of the frame A as shown in Figs. 3 and 4.

G and G are elliptic or eccentric gears secured respectively to the shafts G and d as shown in Figs. 3 and 4. The teeth of said elliptic or eccentric gears mesh into each other and by this arrangement the crimping and finishing jaws operated by the rotary wheel shaft (1 are caused to move downward during the crimping operation with a comparatively slow motion and upward with an increased speed thus increasing the working capacity 0 the machine. 7

B is an upper cross-bar or brace secured to the upper ends of the standards B, B as shown in Figs. 1, 3 and 4t.

H is the stationary crimping form which is arranged between a pair of angular holding bars H, H secured to the base or frame of the machine. The lower end of the crimping form H is made to rest on a bottom plate H secured to the frame of the machine as shown in Fig. 4. h, h and 72, are clamping bolts or screws for clamping the bars H, H against the opposite sides of the crimping form I-I after it has been properly adjusted to its working position. By this arrangement of the angular bars H H and their adjustable clamping bolts h, h h it will easily be seen that the position of the crimping form may easily be adjusted according to the requirements of the operator and the work to be done on the machine.

K and L are the upper smooth finishing jaws which are hung on horizontal pins 70, Z projecting inwardly from the jaw supporting plates K, L as shown in Fig. 3.

The jaw support K is made in two parts pivoted together on the vertical pin so as to permit the jaw K to be adjusted and held parallel relative to the opposite jaw L.

70 70 Fig. 2 are set screws for securing the jaw K in position after being adjusted.

The jaw supporting plate K is provided with means by which its jaw K can be adjustably secured to it on avertical plane and for this purpose the part K is provided with curved slots 70 k as shown in Fig. 6.

k is a guide screw passing freely through the slot 70 and its inner end is screwed into the jaw K.

Through the slot k passes loosely a screw k the inner end of which is screwed into the jaw K and its outer end provided with a handle 70 by means of which the jaw K may be secured to the part K after'its position has been adjusted by the operator.

In Fig. 8, Z Z Z Z and Z represent corresponding parts for adjusting and securing the jaw L to its supporting plate L.

The finishing jaws K, L are smooth on their insides without any corrugations as shown in Figs. 1, 4, and 5.

The jaw support K has an outwardly projecting preferably square shank k which is adjustably guided in the jaw carrier C which at such place is provided with top and bottom cap plates 0, O, and the jaw K and its supporting plate K are horizontally adjustable by means of a suitable eccentric cam to opened and closed relative to the opposite plate K by means of an eccentric cam 1" provided with a handle Z in a manner similar to the mechanism for opening and closing the jaw K.

M and N represent the lowercrimping jaws which are corrugated on their lower inner portions and are made smooth or non-corrugated on their upper inner portions as fully shown in Figs. 3, 4, and 5.

The jaws M, N are pivoted to their respective jaw supports M, N and otherwise constructed in a similar manner to the upper jaws K, L and need therefore not be in detail described.

The crimping jaw N and its supporting plate N is horizontally adjustable to and from the opposite jaw M by means of the eccentric or cam n in a similar manner to the upper jaws, and the axis of said cam has secured to one end of it a weighted lever 71 provided with an adjustable weight n for regulating the pressure on the leather between the lower crimping jaws as shown fully in Figs. 1, 3, 4: and 5. To the other end of said eccentric is secured a lever O which is pivoted to an upwardly projecting lock bar P the upper portion of which is guided in a box Q pivoted to the upper portion of the frame of the machine at q as shown in Figs. 1, 4 and 5.

The bar P has a notch 19 at one side adapted to engage a tooth R in the box Q which tooth is adjustable relative to said box Q for the purpose of regulating the time when the lower crimping jaws are to close on the leather that is being crimped.

q is a spring secured to the inside of the box Q and adapted to bear against the bar I for the purpose of causing its notch 17 to inter lock with the tooth R as will hereinafter be described.

S is an adjustable releasing pin against which the bar P comes in contact during the downward motion of the crimping jaws and thereby causes the notch 19 on the bar P to be disengaged from the adjustable tooth R when the lower crimping jaws are closed against the leather on the crimping form by the action of the weighted lever n and its weight n.

The pin S is made adjustable for the purpose of taking up any wear that may occur on the bar P during its up and down motion in the pivoted box Q.

During the downward motion of the crimping jaws M, N and after they have passed by the leather on the crimping form H the said jaws are still further closed without touching the said form H by the action of the weighted lever p and such closing movement is limited by the lever 0, coming in contact with an adjustable stop T secured to one of the jaw carriers 0 as shown in Fig. 1, such stop being adjustable to compensate for the thickness of the crimping form that is being used.

If it is desired to use in connection with this machine a crimping form 11 of a kind ation by depressing the treadle leaver F causcommonly used on ordinary crimping machines as shown in Fig. 5, I prefer to sup port such crimping form on two stands H H having adjustable slotted clamps H H secured to their upper ends in which the crimping form is secured by means of clamping bolts h 71. as fully represented in Fig. 5.

I have shown in the drawings two sets of jaws, namely, a pair of upper ones and a pair of lower ones, but I wish to state that I may ishingjaws K, L are expanded or open and the lower or crimping jaws M, N are instantaneousl y closed and held so by the weighted lever it. The machine is now set in opering the crimping .and finishing jaws to be moved downward and during such downward motion of the jaws the lower crimping jaws M, N are automatically expanded before their lower edge reaches the top of the crimping form and this is accomplished by the hooked bar P, which for the time being is held locked in the pivoted slide Q until the lower crimping jaws have passed onto the stock the proper distance when the lock barP is then automatically disengaged from its pivoted box Q and the jaws M, N closed against the stock by the weighted lever n causing the crimping to take place. When the lower crimpingjaws M, N have passed by the lower edge of the leather 011 the form H the said jaws are still further closed (without touching the plate) by the action of the weighted lever n which brings the knee lever 0 against the adjustable stop T causing the said lower crimping jaws to be held so closed until they reach their upper original position, and as they reach their upper position the lock bar P is automatically locked in its box Q as before. As the upper finishing jaws K, L duringtheir downwardmotion pass onto the leather they are closed against it by manipulating the hand levers is, Z and remain so closed until they reach their lowest position after which they are expanded, the machine stopped, and the now crimped leather removed, after which the machine is started to cause the crimping jaws to ascend to their upper original positions to enable another piece of leather to be placed on the crimping form and so on during the operation of the machine.

Having thus fully described the nature, construction, and operation ofmy invention, I wish to secure by Letters Patent and claim- 1. In a, crimping machine, the combination with two vertically reciprocating jaw carriers carrying crimping jaws, of pitmen pivotally connected at their upperends to said carriers, a rotary-shaft, crank-wheels fixed upon said shaft, crank pins attached to said crankwheels and pivotally connected to the lower ends of the pitmen, said crank-pins being radially adjustable on said crank-wheels for varyingthe vertical movement of the crimping jaws, substantially as described.

2. In a crimping machine, the combination of an adjustable crimping form resting at its lower edge on a stationary support, two L- shaped holders arranged upon the opposite sides of the crimping form and secured to the frame of the machine, and clamping-bolts for forcing said holders toward each other to grasp the opposite sides of the crimping form and hold the same inits adjusted position by friction, substantially as described.

3. In acrimping machine, the combination of verticallymovable pivoted jaws, supports to which said jaws are adjustably secured, angular shanks projecting from said supports and suitably guided in the jaw carriers and cams ecoentrically mounted in apertures in said shanks and provided with operating levers for opening and closing said jaws, substantially as described.

4. In a crimping machine a crimping form and vertically adjustable jaws combined with an eccentric or cam for opening and closing said jaws, a weighted lever attached to said cam or eccentric,-a secondary lever on said eccentric or cam, a notched lock bar pivoted to said latter-lever and means forvautomatically locking andunlocking said lockbar, and a pivoted locking box having an adjustable locking-projection substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 5th day of July, A. D. 189a.

JAMES H. FERGUSON.

Witnesses: V

ALBAN ANDREN, CHARLES A. HARRIS. 

